op {
  graph_op_name: "XlaSendToHost"
  in_arg: {
    name: "input"
  }
  attr {
    name: "Tinput"
  }
  attr {
    name: "key"
  }
  summary: "An op to send a tensor to the host."
  description: <<END
input: the tensor that will be sent to the host.
Tinput: element type for input.
key: A unique identifier for this region used to match up host transfers.
END
}
